@reach/alert

Docs | Source | WAI-ARIA
Screen-reader-friendly alert messages. In many apps developers add "alert" messages when network events or other things happen. Users with assistive technologies may not know about the message unless you develop for it.
The Alert component will announce to assistive technologies whatever you render to the screen. If you don't have a screen reader on you won't notice a difference between rendering <Alert> vs. a <div>.

function Example(props) {
	const [messages, setMessages] = React.useState([]);
	return (
		<div>
			<button
				onClick={() => {
					setMessages((prevMessages) =>
						prevMessages.concat([`Message #${prevMessages.length + 1}`])
					);
					setTimeout(() => {
						setMessages((prevMessages) => prevMessages.slice(1));
					}, 5000);
				}}
			>
				Add a message
			</button>
			<div>
				{messages.map((message, index) => (
					<Alert key={index}>{message}</Alert>
				))}
			</div>
		</div>
	);
}